
- That's so SILLY.
- It's actually based on very sound theories.
The Big Bang Theory Season 1, Episode 16

and to get out to the terraced roof
without any signals or SILLY things.
Money Heist Season 1, Episode 4

- Are you sure?
- Don't be SILLY.
The Big Bang Theory Season 11, Episode 9

Sheldon, you're being SILLY.
The Big Bang Theory Season 10, Episode 23

and I told her
she was being SILLY,
The Big Bang Theory Season 12, Episode 3